Throttle for carbureters.



A. C. STEWART.

THROTTLE FOR CARBURETERS.

APPLIOATIOII FILED SEPT. 16, 191.3.

Patented Oct. 20, 19151.

embodiment of the invention, and referring thereto:

' of the throttle with the cerbureter attached thereto,'the carburetor being shown partly let 7, and with any usual or suitable means pipe 10 extends from the top of the chamber lower end portion of the pipe 10 and is strhsuci fsrswsur, or i;

suiiorsrs "sou To all ihlhom "it may-cancers: Bait known that i, ALFRED G Srswssr, a citizen o'fthe.,United States, residn'hg st. Los lhngeles, in the county of lhos Angeles and Stitte of Gelifornis, have invented a new oil usefull ihrottls for Carbure'ters, of which the followinggis e; specification, This invention relates to means for throttling' or cuttiiigioif'the supply of mixture from a carbureicrto the inlet of an internal combustion engine, and the invention is particularly iiitianded for use with heavy fuels which are liable to he 'deposited or, separated from the mixture in passing from the carburetor to the engine. lhis depositing;- acti'on is generally most marked when the velocity of the mixture is checked by'the throttle. The main object of the present invention is to provide means for taking up thehecvy fuel deposited at the throttle, and mixing it with the air passingto the engiue;

Other objects of the invention will appear hereinafter, i

The accoriipauying' drawings illustrate an Figure 1 is a horizontal section of the throttle and the carbureter on the l ne ss -ai Fig. 2. Fig. 2 1s a vertical section iii-elevation. Fig. 8 is a section on line m a), v

'1 designates the casing of the throttle formed as a vertical tubular member having an enlargement 2 at its lower end, and closed bottom 8. Said tubular casing 1 opens at its upper end into a chamber i which extends laterally and communicates With outlet of carburetor or device 5 for supplying definite measured quantities of oil and air, such carbureter being of any usual or suitable construction and being provided with an oil inlet 6, with an air infor causing a-definite amount of oil to be drawn 1n with the air assing from the inlet 7 to'the outlet 8 o the carburetor, A

4: to the inlet of the engine. The tubular throttle member 12 slides vertically into the provided at its lower end with an outwardly extending flange 14: cooperating with the rests swu auos rues uests 1 s, 1913. Scriaiifl'o. 790,015.

oi s smooths, 'cstisoitms; 'essuuusrms, 1

Letters Patent. Patented Oct. 20,1914.

I'throttle to control the passage of niihture from the interiorfof the casing 1 ea the in: tenor of the tubular niernh l2; Theco-l operating portions of. the fiange l iendfbotitom member 3 are serrated oi" pr iiv id eijiwith,

gannular ridges 15 so that the air aiud dil' in ipassing between the said parts will?be fforced to pursue a tortuous'course. Suit-- -gable means may be provided for opei atingimember' 12, for example, a cranhl8 on a' lshaft, lf'mounted' in hearings in casing I u- 0 o zsaid crankcarrymg it our 19 engsgiugm a.

neck 20' on the outside of tubular'memher fiend shaft 1*("oarrying an arm 22 con: lse'cted to any suitable means for operating, ithc throttle,

i" hos. useiwith heavy oils it ijsfdesirable to;

- ipi'ovide rhesus for heating thejcasing l-and- {for this purpo e an inclosiugjacket 25 my lhe'proyided'a ound the casing 1, said jecket 4 5 iheing secured to the bottom of the top 5 chamber 2, andprovidedwith inlet and outi-g le't connectiohs or 'pi'pes27 and 28 whereby' it stream or current ofheating fluid may be passed through the space 30' between said jackehand casing 1. Said fiuid'mcy 'cou sist'for example, of the exhaust fromthe" interual combustion engine, which draws its lhe operation 15 as follows: Suction from supply from the pipelO.

the engine exerted thrbugh the pipe 10 operatswhen the throttle 12 is opened, to draw air together withoil through the carburetor device 5,"and the chamber. at to the vertical tubulsr chamber within the casing; 1 of thcthrottle, said chamber being verti-.-

cal. Any ofthe heavy oil which is not retained by the air and is deposited therefrom descends to the bottom of the chamber 2 and collects on the bottom plate 3 thereof. The air passing between the flange '14 near the bottom of the outlet member 1% and the bottom plate 3 is brought into effective contact with this oil collected on the bottom plate so as to take the oil'up again, and mixes it With the air, carrying it forward, through the pipe 10, to the engine. The serrations 15 have an important function in this connection, in that the oil in being deposited on and borne across the edge of these serrations is more finely atomized and more effectively brought into contact With the air, the tortuous path for the air presented by the serrations also aiding in the mixing action. The heating medium such as exbottom member 3 of the casing 1 of the outer jacket cause the casing l and bottom plate 3 thereof to be heated so as to bring the oil deposited from the mixture to the proper temperature required for effective vaporizing and carbureting action.

What I claim is: I

1. In a throttle for carbureters, a vertically extending tubular casing having a closed bottom, means for supplying mixture of oil and air to the upper part of said casing, said casing having an outlet at its top, and a tubular throttle member slidable vertically in the outlet of said casing, and

. extending down within and spaced from the said tubularcasing to form a passage wherein the mixture may pass from the said mixture supplying means downwardly between said'casing and throttle member and up- '2 0' wardly Within said throttle member, and

means on the bottom of said throttle member cooperating with the bottom of the easing to cause a tortuous passage of mixture from the casing to the interior of the throttle member.

2. In a throttle for carbureters, a vertically extending casing having closed bottom, means for supplying a mixture of oil and air to the upper part of said casing, and a throttle member movable vertically in said casing and cooperating with-the bottom of the casing to control the passage of 3. In a throttle for carbureters, a vertically extending tubular casing having a closed bottom, means for supplying mixture of oil and air to the upper part of said casing, said casing having an outlet at its top, a tubular throttle member slidable ver- ,tica-lly in the outlet of said casing, and extending down within and spaced from the said tubular casing to form a passage wherein the mixture may pass from the said mixture supplying means downwardly between said casing and throttle member and upwardlywithin said throttle member, said throttle member cooperating with the bottom of the casing to control the passage of mixture from the casing to the interior of the throttle member, a heating chamber surrounding said tubular casing, and means for supplying heating agent to said chamber.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 27th day of August, 1913.

ALFRED C. STEWART. In presence of A. P. KNIGHT, LORA M. BOWERS. 

